Damper and temperature regulator.



P. DAVIS! DAMPER AND TEMPERATURE B.EGULATOB. APPLICATION rnmn Jun. 9,1908.

Patented Dec. 29, 1908.

a sums-sum 1.

- ME t v 2a THE NORRIS PETERS 50,, wAsHn-smn, b. r :4

V. F. DAVIS. DAMPER AND TEMPERATURE REGULATOR. APPLIOATION FILED MAR. 9,I908.

Patented Dec. 29, 1908.

3 SHEETS-SHEET 2.

glll

ATTORNEY Th: Noxms PETERS cc vMsHnynmN, n. c.

v F. DAVIS. DAMPER AND TEMPERATURE REGULATOR.

APPLICATION FILED MAR. 9 1908.

908,077. I Patented Dec. 29,1908.

3 SHEBTS-SHEET;3.

WlTNESSES: V INVENTOR I BY-- 1n: NORRIS PETERS cm, waswmcrmv, D c.

55 air beneath the fire,-and with a damper'12,

VERNER F. DAVIS, OF ORANGE, NEW JERSEY.

DAMPER AND TEMPERATURE REGULATOR.

Specification of Letters Patent.

Patented Dec. 29, 1908.

Application filed March 9, 1908. Serial No. 419,874.

To all whom it may concern:

Be it known that I, VERNER F. DAVIS, a citizen of the United States,residing at Oran e, in the county of Essex and State of New ersey, haveinvented certain new and useful Improvements in Damper and TemperatureRegulators; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,refer: ence being had to the accompanying drawings, and to figures ofreference marked thereon, which form a part of this specification.

This invention consists of a regulator, actuated by a fluid underpressure, that is adapted to regulate dampers and valves so that apredetermined temperature in a re ceptacle can be maintainedautomatically.

The invention consists of acylinder having a piston with a piston rodprojecting therefrom, which pistonrod is used to actuate the damper orsimilar device, the piston being actuated by a fluid pressure, in bothdirections, so that the return of the piston is positive and steady.

The invention further consists of an improved method of admitting fluidunder pressure to one end of the cylinder to actuate the iston, themeans automatically draining t 1e water from this end of the cylinder,and this admitting and draining mechanism being actuated by means of adiaphragm, which in turn is moved by steam or other pressure, and asliding weight or a similar device is used to govern the amount pfpressure necessary to actuate the reguator.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a side view of an ordinary house heating boiler, equippedwith the im roved regulator, showing the regulator attac ed to thedampers of the heater. Fig. 2 is a vertical section of the regulator.Fig. 3 is a top view of the same, and Fig. 4 is an end view of a part ofthe regulator, showing the outlet for the waste fluid. Fig. 5 is asection of a modified formof construction, and Fig. 6 is a view of oneof the systems in which this modified construction can be used, showinghow it is installed in the system.

In Fig. 1 is illustrated an ordinary house heater 10 which is provided,on the front, with a clinker-door 11 which is used to admit which damperregulates the draft to the flue. Installed at any suitable point, butshown in the drawings as being placed on the top of the heater, is theregulator 13 which is connected by means of a steam pipe 14 which isconnectedat 14 to the regulator, the connection 14 being shown in Fig.2. The regulator consists of a base 15 having suitable legs on which itstands, and secured in the base is a diaphragm 16 fitting over theconnection 14* of the pipe 14, whereby the diaphragm is raised when thepressure in the pipe 14 arrives at a predetermined point.

VVhen-the diaphragm is raised it lifts a plate 17 with standardsthereon, and by means of the knife edges 18 it lifts the long end of thelever 19, this lever being pivoted on the pin 19 and being provided witha counterweight 20. A sliding weight 21 is usedtovary the pressurenecessary to raise the diaphragm and the lever 19, this weight 21 beingfastened in place by a suitable set screw'22, and where a very highpressure is to be used, additional Weights can be placed on the endweight23. At a suitable point on the long end of the lever 19 arearranged the knife edges 24, one on each side of the lever, which knifeedges engage and actuate a saddle 25 which is connected to a rod 26, theupper end of which, when the long end of the lever 19 is lifted, engagesthe lower end of a stem 27, the stem 27 being tubular, the rod 26 andthe stem 27 being inside of the casing 28. The casing 28 is fastened, inany manner, to a bracket 29 secured or integral with the base 15, and isclosed on the bottom by means of a lug 30.

When the rod 26 rides up and engages the bottom of the tubular stem 27,it closes the tubular stem 27 and lifts it up against the action of thespring 33, which is regulated by the cap 34, so that the valve 31, onthe stem 37 is lifted from its seat 32, and the fluid under pressure,whether water or air, but pref y water, is admitted through the pipe 1erab opening 3 5 from one of the pipes 35, shown in Fig. 1. This fluidunder pressure passes into the chamber 36 up past the valve 31 into thechamber 37, from which it asses down through a passage 38, shown in ig.4, into a pipe 39 which is connected, at its end as at 40 in Fig. 2, tothe bottom of the cylinder 41. The cylinder 41 is closed at the top bymeans of a cap 42 which has an opening 41 forming a pipe connection forthe other pipe 35, shown in Fig. 1, whereby the pressure is the same onboth ends of the cylinder. The cap let pipe 57 leading to a diaphragmvalve 58,

42 is provided with the usual form of stufling box 43, and through thecap and the stufling box slides a piston rod 44, provided on its lowerend with a piston 45 which is held on the piston rod 44 by means of nutswhich screw on as usual to a stem 46, which stem is a little longer, orextends further down than the piston, so that room is left for theadmission of fluid under pressure beneath the piston, when the piston isat its lowest point. When the fluid under pressure is admitted throughthe primary valve previously described, which is situated within thecasing 28, and has passed through the pipe 39, it forces the piston 45and its piston rod 44 up- Ward against the pressure coming in throughthe opening 41*, because the piston rod is made of a diameter suflicientto make a noticeable difference in the area of the upper and lowersurfaces of the piston, whereby the surface and pressure are much largerunderneath the piston than above it. hen the piston rod rides upward,its end 47, to which are attached the ropes or wires 48, shown in Fig.1, permits these ropes 48 to be relaxed to allow the dampers 11 and 12to close. WVhen they have remained closed sufliciently long enough tocause a decrease of pressure below the desired point, the long end ofthe lever 19 descends by reason of the settling of the disk or plate 17on the diaphragm l6, and the rod 26 on the saddle 25 is pulled down,which allows the valve 31 to be forced down by the spring 33 onto itsseat 32, and thus the supply of fluid under pressure to the cylinderbelow the piston, by means of the pipe 39, is shut oil. The rod 26 thenuncovers the duct 50 in the tubular stem 27, this duct being open atboth ends, and the fluid under pressure beneath the piston 45 runs outthrough the pipe 39 and the passage 38 into the chamber-37, then downthrough the duct in the stem 27 to the intes rior of the casing 28,being revented from passing down through a tu e 52, through which therod 26 slides, by means of a plate 51 which sheds the water, if water isused, and the water under pressure passes out through a spout 53 to anydesired receptacle or pipe.

The operation of this regulator is ositive, and the regulator is compactand at t e same time sensitive. It is also adapted for high or lowpressures, and it can be used in conjunction with any particular system.

A modified form of regulator is shown in Fig. 5, where the primary valveand its operating saddle 25 is placed over the center of the disk 17 soas to give a direct action thereon. The operation of the primary valvein this construction is the same as in the previously described one, butthe pipe openings 53 and 54 connect with an inlet pipe 56 carwhich inturn closes an inlet valve 59 in the steam or other pipe 60 whichsupplies a tank, such as a vulcanized tank, and thus main.- tains apressure at a desired point. \Vhen the pressure falls below a certainpoint, the operation of the primary valve is the same as before, the rod26 dropping to uncover the hollow stem 27 and allowing the water orother fluid under pressure to pass down through the primary valve andout through the spout 53, thus relieving the pressure on the diaphragmvalve 58, and allowing the spring 62 to close the inlet valve 59 of thesteam pipe 60.

It will of course be understood. that the diaphragm valve 58 will work adamper instead of the inlet valve 59, the figure simply showing oneadaptation of the regulator.

In the construction shown in Figs. 2 and 3, I prefer to install apet-cock 61 directly beneath the diaphragm 16, to draw oil, itnecessary, any water that might accumulate underneath the diaphragm.

Having thus described my invention, what I claim is 1. In a regulator, afluid pressure motor, an inlet pipe thereto to admit fluid underpressure, a primary valve in the inlet pipe, the primary valveconsisting of a casing, a hollow tubular stem in the casing having avalve on its exterior, the valve normally resting on a valve seat in thecasing and acting as a closure between the pipe connections of theprimary valve, the duct through the hollow stem being open when thevalve is shut, means for operating the hollow stem to open the valve,the means when operating the stem also closing the duct of the stem, anda normally open outlet pipe leading from the valve casing.

2. In a regulator, a primary valve consisting of a casing having a pairof chambers at the top thereof, each chamber having a pipe opening, ahollow valve stem adapted to reciprocate through the chambers, a valveon the exterior of the hollow stem and being adapted to be seatednormally on a valve seat between the chambers, a rod arranged toreciprocate and operating to close one end of the hollow stem and liftthe stem to open the valve between the chambers, the rod when in itsnormal position allowing the valve to seat itself in opening the hollowstem, a spout leading from the valve casing below the hollow stem, andmeans for reciprocating the rod.

3. In a regulator, a primary valve consisting of a casing having a pairof chambers at the top thereof, each chamber having a pipe opening, ahollow valve stem adapted to reciprocate through the chambers, a valveon the exterior of the hollow stem and being adapted to be seatednormally on a valve r-ying a fluid under pressure, and With an outl seatbetween the chambers, a rod arranged through which the rod'reciprocates, a plate secured to the rod above the sleeve, a spoutleading from the casing from below the hol- 10v; stem, and means forreciprocating the 10 ro In testimony, that I claim the foregoing, I havehereunto set my hand this 23d day of November, 1907.

VERNER F. DAVIS. Witnesses:

WM. H. CAMFIELD,

E. A. PE L.

